Unlocking a £20 Linksys PAP2 VoIP adapter

gavinp · 28 September 2005 at 1:31PM

An enterprising spark in the U.S. has found out how to unlock a PAP2 VoIP adapter sold locked to the Vonage VoIP network:

http://www.broadbandreports.com/forum/remark,14450684

These adapters are available from Comet and BroadbandBuyer for £19.99:

http://www.comet.co.uk/comet/html/cache/68_270202.html

http://www.broadbandbuyer.co.uk/Shop/ShopDetail.asp?ProductID=2286&CategoryID=320&ShopGroupID=77

These adapters have sockets to allow two normal telephones to be connected to use VoIP providers.

Please note that the unlocking process is not straightforward and requires a strong knowledge of networking, TFTP etc.

I haven't tried this yet - I am heading off to Comet later this afternoon....

Thanks

Gavin

gavinp · 28 September 2005 at 4:51PM

Well I got one, followed the instructions and I have a phone connected to Sipgate using it....

A few notes if you decide to do this:

1. The filenames in the instructions are wrong - make a note of the BIN file names (within the ZIP files) and amend the URLs given accordingly (i.e. no hyphens).

2. If you use the SolarWinds TFTP server linked to in the thread, change the Security settings to allow "Transmit files" rather than the default of "Receive only".

3. Ensure that the DNS servers are defined in the PAP2 setup or else the ATA won't be able to find Sipgate (or your VoIP provider)...they are missing from Sipgate's instructions (for Sipura ATAs which are very similar).

4. Set the "FXS Port Impedence" to "270+750|150nF" which is the CTR21 standard for the UK and (most of) Europe.

5. Set CallerID method to "ETSI FSK with PR(UK)".

Thanks

Gavin

charlie12 · 29 September 2005 at 2:35AM

Great Stuff.

I was reading about the PAP2 the other day, looked good but the £40 price put me off. At £20 it's much better, and that's the retail price - I'm sure I can reduce that a little more with a bit of searching

Only problem I have is that I'm usually downloading 24/7 which means that VOIP calls tend to break up/lag. I don't want to stop my downloads every time I use VOIP, so I need to get a new router that supports QoS so that I can prioritise VOIP traffic over everything else.

DesG · 29 September 2005 at 12:46PM

Out of stock at BBB, and can't find them on the Maplin website, and no comet near me

I would love to get one to try it out.

Cheers, Des.

charlie12 · 29 September 2005 at 12:50PM

They appear to be in stock on the Comet website - free delivery too.

DesG · 29 September 2005 at 12:57PM

Aye, but they won't deliver to me

charlie12 · 29 September 2005 at 1:01PM

Oh right, I'll let you know if I find any other vendors - haven't really looked yet

DesG · 29 September 2005 at 1:04PM

I might take a trip to my nearest Maplins and see if they have any stock in store.

Has anyone got one from Maplin?

Cheers, Des.

DesG · 29 September 2005 at 4:27PM

Took the trip to Maplins and no luck, they have never stocked them, and they are not in the new catalogue just out.

So it seems the only place I can get them is from Comet who won't ship to me

If anyone knows of anywhere else selling them, please let me know

Cheers, Des

gavinp · 29 September 2005 at 4:33PM

If you buy one of these, please ensure that you run the unlock process straightaway with your Internet connection disabled.

It seems that the PAP2 will try to automatically download new firmware from Vonage when it is powered up which will make the unlocking process more difficult if not impossible...

Thanks

Gavin

charlie12 · 29 September 2005 at 4:36PM

Gavin - once unlocked will the PAP2 still attempt to download firmware from Vonage at some point? Like on power-up for example?

cheers

DesG - whereabouts are you located?

Unlocking a £20 Linksys PAP2 VoIP adapter

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